Unlike most other cranial nerves, the trochlear nerve is exclusively a motor nerve (somatic efferent nerve). The trochlear nerve is unique among the cranial nerves in several respects: It …

What is the trochlear nerve? Your trochlear nerve, also known as the cranial nerve 4 or CN IV, is a motor (movement) nerve that sends signals from your brain to one of the muscles that …

The trochlear nerve transmits general somatic efferent impulses, which synapse in the skeletal fibers of the superior oblique muscle. The superior oblique muscles allow for depression, …

Sep 25, 2024 · Find out what you need to know about the trochlear nerve. Discover its functions, location, and related health conditions.

Dec 10, 2025 · The trochlear nerve is the fourth paired cranial nerve. It is the smallest cranial nerve (by number of axons) and the cranial nerve with the longest intracranial course. It has a …

Discover the origin, course and supply of the Trochlear Nerve. Learn how it innervates the superior oblique muscle.

3 days ago · The trochlear nerve provides motor control to only one muscle: the superior oblique muscle of the eye. This muscle is unique because its tendon passes through a cartilaginous, …

Mar 22, 2025 · The trochlear nerve is the fourth cranial nerve (CN IV), that contains somatic efferent (motor) nerve fibers responsible for controlling eye movements. It is the smallest of all …

Sep 16, 2025 · The trochlear nerve is the fourth (CN IV) and thinnest cranial nerve. It exits the midbrain posteriorly, eventually passes into the cavernous sinus and into the orbit where it …

Sep 8, 2024 · The fourth cranial nerve, also known as the trochlear nerve, arises from the midbrain at the level of the inferior colliculus (ventral to the Sylvian aqueduct). This nerve …